干旱区生态环境知识资源中心(Arid): 黑河中游主要农作物灌溉制度优化

Arid

	黑河中游主要农作物灌溉制度优化
其他题名	Optimization of crop irrigation scheduling in the middle reaches of the Heihe River Basin
	李想; 韩智博; 张宝庆; 高超; 贺缠生
来源期刊	生态学报
ISSN	1000-0933
出版年	2021
卷号	41 期号:8 页码:3067-3077
中文摘要	科学的灌溉制度是干旱半干旱地区农业生产的重要保障。黑河位于西北干旱区,是我国第二大内陆河,且当地中游农业灌溉和下游生态需水矛盾十分突出。利用DSSAT (Decision Support for Agro-technology Transfer)模型模拟了黑河中游地区玉米、小麦、油菜、马铃薯的生长情况,对比分析了四种作物生育期内需水量变化与当地降水条件、现行灌溉制度之间的差异。通过设置灌溉组合探究了四种作物最适宜的灌溉制度,并计算了优化灌溉制度下的节水潜力。结果表明:DSSAT模型通过参数校正与验证后,对四种作物生长过程模拟性能较好,产量标准化均方根误差(nRMSE)均低于15.0%,决定系数(R2)均达到0.65以上。缺水量模拟结果表明,四种作物生长季平均水分亏缺介于122.5367.0 mm。通过调整灌溉制度,可使玉米、小麦、油菜、马铃薯的水分利用效率分别提高54.8%、25.0%、18.3%和51.3%,且产量变幅均低于5.0%,实现了高产节水的目的。在研究区实施最优灌溉制度,中游农业灌区每年可以节省8.1*10~8 m~3的水资源量,用于支持下游生态保护。
英文摘要	Scientific irrigation scheduling is essential for agricultural production in arid and semi-arid regions. Located in the northwest arid region, the Heihe River is the second largest inland (terminal lake) river in China and faces increasing competition for water between the middle reach agricultural irrigation and lower reach ecosystem services. In this study, we use the Decision Support for Agro-technology Transfer (DSSAT) model to simulate the growth of four main crops: maize, wheat, rape seed and potato in the middle reaches of the Heihe River Basin. We first compared the temporal differences between the water demands of the four crops and the precipitation during the growing season as well as the differences between the crop water demands and the current irrigation scheduling. Subsequently, we explored multiple irrigation scheduling combinations during the growth period to optimize irrigation scheduling of the four crops. Finally, we calculated the water saving potential under the optimal irrigation scheduling. Results show after calibration and validation with in situ observations, the DSSAT model has better simulation performance for the four crops in the study region. The standardized root mean square error (nRMSE) of the crop yields is less than 15.0%, and the coefficient of determination (R2) is above 0.65. The annual average water deficit of the four crops ranged from 122.5 to 367.0 mm during the growth season. By adopting the optimal irrigation scheduling, the water use efficiency of maize, wheat, rape seed, and potato could be improved by 54.8%, 25.0%, 18.3% and 51.3%, respectively, and the variation of the simulated crop yield was all lower than 5.0%, achieving both high yield and water conservation. If the optimal irrigation scheduling is applied in the study area, potential water saving could reach to 8.1*10~8 m~3 annually in the middle reaches, which could be used to support downstream ecological protection.
中文关键词	DSSAT模型 ; 黑河中游 ; 灌溉制度 ; 节水潜力
英文关键词	DSSAT model the middle reaches of the Heihe River Basin irrigation schedule potentially reduced water amount
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6956971
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365228
作者单位	李想, 兰州大学资源环境学院旱区流域科学与水资源研究中心, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国.; 韩智博, 兰州大学资源环境学院旱区流域科学与水资源研究中心, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国.; 张宝庆, 兰州大学资源环境学院旱区流域科学与水资源研究中心, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国.; 高超, 兰州大学资源环境学院旱区流域科学与水资源研究中心, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国.; 贺缠生, 兰州大学资源环境学院旱区流域科学与水资源研究中心;;美国西密歇根大学地理系, 西部环境教育部重点实验室;;, 兰州;;密歇根卡拉马祖, ;;美国 730000;;49008.
推荐引用方式 GB/T 7714	李想,韩智博,张宝庆,等. 黑河中游主要农作物灌溉制度优化[J]. 兰州大学,2021,41(8):3067-3077.
APA	李想,韩智博,张宝庆,高超,&贺缠生.(2021).黑河中游主要农作物灌溉制度优化.生态学报,41(8),3067-3077.
MLA	李想,et al."黑河中游主要农作物灌溉制度优化".生态学报 41.8(2021):3067-3077.